William evans



w. EVANS.

. Carriage-Spring Head.

No. 88,861. v Patnted Apri l 13,-1869.

fifiuitml fitatw gtateut WIL IAM EVANS, or PITTSBURQAASSIGNOR TO JouN EvANsoP PHILADELPHIA, PENNSYLVANIA.

. Letters Patent N 0. 88,861, dated Ap'ml 13, 1869.

IMIP ROVED EAR-BLANK FOR ELLIPTIC SPRING-S.

the Schedule referred to In these Letters Patent and making part of the same.

upon one side, and a rib, B, upon the other side, near the upper edge, this rib being distant from the edge of the metal about equal to the'thickness of the head of the spring to which the ears are attached. Then, in a die of the proper form for the ears, I cut from the To all whom it may concern:

Be itknown that I, WILLIAM EVANS, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new Improvement in-OarIiage-Spring Heads; and I do hereby declare the following, when taken in connection with the accompanying drawings, bill, as denoted in Ted and bluev which and the letters of reference marked thereon, to be a ears, W reverse ofeaoh other: or What W term fight T full, clear, and exact description of the same, and which and left I also punch at a, for the rivet through the springhead, and also perforat the spring, as at d, for convenience of attachment to the spring-head. In fig. 2 the ear is shown complete. A

The end of the spring O, shown in fig. 3, is formed with a projecting stud, f, which corresponds to the perforation (Z in the respective, ears. Then the opposite ears are placed upon the opposite sides, the stud f en tering the perforations d in each, and the rib on the inside of the ear resting against the surface of the spring, .the ears are temporarily held to the spring. Then the head is heated, and the parts welded together by dies prepared for the purpose in the usual manner.

Thus, by a single pair of dies, I form both ears, and I with very little .waste of material The bar from which the ears are. cut may be formed with a single rib, A, and cut in the same dies, the righthand cars being cut from the bar, one side up, and the left-hand cars from the said bar by turning the bar over, so that the rib comes upon the opposite side,the only operation which the dies have to perform being said drawings constitute part of this specification, and represent, in- I Figure 1, a perspective view of the bar of metal, prepared for cutting therefrom the ears for springheads;

Figure 2, one of the spring-heads complete and ready for attachment; andin Figure 3, the spring-head with the ear shown in red, as attached.

F- v This invention relates to an improvement in carriagesprings, suchas are formed from several layers of fiat steel, and commonly known as ellipticsprings, the object being to simplify the process of forming the heads.

To this end, the inventionconsists in first rolling a bar of metal, so as to raise thereon a rib, at a distance from the edge of the bar equal to about the thickness of the end of the spring to which the ears are attached.

This construction enables me to cut the ears both right and leftwith the same die, the rib serving as a uide for theposition of the ear on the spring, as a means of holding the ear in position, and alsp as an I aid in welding-the ear to the spring.

In order to the clear understanding of my invention, I will fully describe the same as illustrated in the accompanying drawings.

Various devices have been resorted to to facilitate the process of forging spring-heads, and it is generally conceded that the most economical plan is to out the ears right and left, and apply them to opposite sides of the spring, temporarily secured to the end of the spring until the whole can be heated and welded to- The rib on the car not only facilitates the placing of the ears in position, but places the metal where it is needed, and facilitates the process of v welding.

Having fullydescribed my invention,

What I claim as new and useful, and desire to secure by Letters Latent, is-

1. Forming the ears fro'rh a bar of netal, having a rib' on one or both sides thereof, substantially as and for the ,purpose set forth. p 4

2. Forming the studs f on the spring, and'the perether. HerQtQfQre, it h i d t Sets f dies one f forations cl in the car, as and for the purpose described. the right-hand ear, and the other for the left. To I WILLIAM EVANS.

avoid the use of the two dies, and simplify the con- Witnesses: struction of the ears for the spring, I first roll the S. SMITH,

metal into a bar, of suitable thickness, as seen infig. .H. P. SLOTERBEOK.

l, and, by preference, form a rib, A, near the edge, 

